Chain



H. V. SHIRLEY A ACHAIN March s, 1927., 1,620,613

Filed Nov. l5, 1923 INVENTOR f f ATTORNEYS.

Patented Mar. 8, 1927.

innen HERMAN V. SHIRLEY, OF LONG BEACH, CALIFORNIA.

CHAIN.

Application filed Novem-ber 15, 1923. Serial No. 674,868.

oil well practice where great stresses and strains are imposed uponsprocket chain members. i y

`The invention has for an object the provision of a chain which may beeasily as- 0 sembled or disassembled for any purpose Y out in claims.

whatsoever, such as the replacement of links or the like, which is easyto manufacture, positive in results obtained by its use, and generallyefficient so far as servieeability and operating factors are concerned.Y

In. practicing the invent-ion I may provide chain links `io'ined inconnected series by means of a pin or pins upon which are carriedrollers between each pair of links. The pin for holding the links ispreferably split longitudinally into two halves, which halves are heldwhen in cooperative. working'rela tion by ka small pin passed throughaligned transverse bores in the said halves, The roller member carriedon the pin is formed with a transverse bore or bores through which boreor bores the short pin may be passed for passage within the alignedbores in the halves of the pin. Thus Vas the chain is used the rollersare rotated andthe pin for holding the' halves together is not permittedto escape from. its position.

VVi-th the above and other objects in view, the invention consists inthenovel and useful provision. formation, construction, association andrelative arrangement of parts, members and features, all as shown in oneof its embodiments in the accompanying draw-A ing, described generallyand finally pointed taken taken on. the line 444 of Figure 3 ;v Figures3 and 4 being on an enlarged scale; and,

Flgure 5 is a perspective view of one of the halves of the pin of thechain Correspondingr parts in allthe figures are designated by the sainereference characters.

Referring with particularity to the drawing, the improved chain asdisclosed is designat-ed as an entirety by A of which a and b are links,c a roller member, (l, a pin, and e a bushing. The links a. and b. aresimilarly formedboth having transverse' perforated or bored heads land2, bowed as shown at 3,*so that when the chain is assembled the headportions 2 of the links are further apart than the head portions 1thereof, as shown in Figure l. The pin l made in longitudinal splitcooperating halves as shown in Figs, 3, 4 and 5, at 4 and 5, and eachhalf ofthe pin is formed with a head 6, the head in the showing beingsquare,` :1lthough any other form might suffice. Each pin is providedwith a transverse bore: 7, which bores are adapted to align when thehalves of the pin are in position of service. It is to be noted that theheads l have their transverse bores slightly larger than the bores inthe heads 2, so that such bores may accommodate the bushing member c.lThe said bushing e is adapted tosurrouind the pin CZ and such bushing isprovided with aligned transverse bores 8 and 9 which may register withthe transverse bores 7 in the pin (Z when the pin or bushing' is rotatedto a certain position. The roller member c is carried upon the bushing eand between the heads 1 of the links a and b, and such roller isprovided with aligned transverse bores l0 and 1l and such bores areadapted to register, when the roller is properly turned, with thealigired bores 8 and 9 of the bushing and the aligned bores 7 ofthe pin.In assembling the chain with reference to Figure 4, it is to be notedthat the aligned bores 8 and 9 ofthe bushing. may be aligned with thebores 7 of the pin by rotating the halves of the pin. The two links aand t first have their heads l in spaced relation and adjacent the heads2 of the next succeeding' link elements, (see 10o the said heads beingl). The bushing is then passed through thc bores in the heads l ot' thelinks a and Zi, and may be flanged at its ends as shown in Figure 2 soas to hold the bushing in place. rIhe roller, prior to this Hanging ofthe ends o'l the bushing, is placed upon such bushing, and the twohalves of the pin may then be passed through the bushing and the boresin the heads l and 2 of the links, as shown in Figure l. The roller cmay be so turned as to align with either the bore 10 or 1l of thebushing and a small pin f approximately ol a length equal to thediameter of the pin (l may then be passed through one'ot the bores inthe roller and in the bushing, and the pin Z turned slightly ifnecessary so that the pin f may be passed into the bores 7 whereby itwill assume a position similar to that shown in Fig.V 4.

It will thus be seen that the roller c may be turned, and it ispractically impossible for the small pin f to become dislodged from thepin CZ. The square heads 6 o'f the halves of the pin cooperate with theheads 2 of the links L and Z) and hold such links in position ofservice. It is a small matter to remove the pin f from the halves of thepin Z by again aligning the transverse bores in the roller with thebores in the bushing and the pin d, so that the same may be knocked:from its position. The links may be rapidly assembled and there are fewparts to become worn. The method depicted is simpler than the use ofcotter pins at the end of the pins.

Cil

Furthermore, a pin such as shown at f may be ot heavier construction andthere is little chance of a shearing of such pin.V It is ot coursepossible to provide as many bores as desired through the pin and rollerso that other small pins may be inserted through the main pin in casethe necessity should arise. It is obvious that various changes andmodiications may be made in practicing the invent-ion, in departure fromthe particular showing of the drawing. without departing from the truespirit of the invention.

Having t-hus disclosed my invention, I claim and desire to secure byLetters Patent:

l. A chain of the character disclosed, having in combination, two spacedlinks, a` roller adapted to be interposed between such links, and aI pinjoined to such links and carrying such roller; such* pin and', suchroller being provided with transverse bores which lie between the twospaced links and which are adapted to align when the roller is in agiven position upon such pin, such pin being formed in cooperativehalves, there being means adapted to be inserted in the bores of suchhalves for holding the pin in position of service to such links.

2. In a chain, the combination, of two spaced links, a pin between suchlinks, said pin being formed in cooperative halves, each one of saidhalves being Formed with a transverse bore and means adapted to bereceived within such transverse bores of the two halves ior holding thepin in position of service to such links; each halt ot the said pinbeing formed with a head, which heads are adapted to engage oppositesides of the links.

3. In a. chain, the combination, of two spaced links, a pin between suchlinks, said pin being formed in cooperative halves, each of said halvesbeing formed with a t-ransverse bore and means adapted to be receivedwithin such transverse bores of the two halves for holding the pin inposition of service to such links; there being a roller carried uponsuch pin, such roller being formed with a transverse bore adapted toalign with the bores in the halves of the pin whereby the means forholding the pin in position of service may be inserted.

4. In a chain, the combination, of two spaced links, a pin between suchlinks, said pin being formed in cooperative halves, each of said halvesbeing formed with a transverse bore and means adapted to be receivedwithin such transverse bores of the two halves :tor holding the pin inposition of service to such links; there being a roller carried uponsuch pin, said roller being formed with a transverse bore adapted toalign with the bores in the halves of the pin whereby the means forholding the pin in position of service may be inserted; there also beinga bushing between the roller and the pin, and such bushing being` formedwith a transverse bore adapted to align with the transverse bore in theroller when the roller is in one position.

5. A chain of the character disclosed having in combination two spacedlinks, a bushing, a roller. such bushing and roller being adapted to beintroduced between such links, a pin joined to such links receivablewithin the bushing; such pin, bushing and roller respectively beingprovided with aligned transverse bores; such pin being formed incooperative halves; there being means adapted to be inserted in thebores of such halves of the pin Jfor holding the pin in position ofservice within the bushing.

6. In a chain, the combination, of two spaced links. a pin between suchlinks, a bushing` formed with a transverse bore surrounding the pin.said pin being formed in cooperative halves, each of said halves beingformed with a transverse bore, and means adapted to be passed throughthe transverse bore of the bushing and received within said transversebores of the two halves for holding the pin in position of service tosuch links.

7. In a chain, the combination, of two spaced links, a pin, a bushingsurrounding the pin, said pin being formed in cooperative halves, eachof said halves being formed With a transverse bore, and nieans adaptedto be received Within sneh transverse bores of the two halves forholding the pin in position of service to such links; there being aroller carried upon the bushing, such bushing and roller beingrespectively formed with a transverse bore adapted to align when in acertain position With the bores in the halves 10 of the pin, whereby themeans for holding the pin in position of service may be inserted Intestimony whereof, I have signed m5 .name to this specification.

HERMAN V. SHIRLEY.`

